EXFO FTB-800 Series for FTB-1 - Manual (Page 259)

Test Results
NetBlazer 249
Alarms/Errors
BER
Alarms

No Traffic
1
RX: No pattern traffic has been received in the last second.

Pattern Loss
RX: More that 20% of bit errors are received or the reference sequence
can be unambiguously identified as out of phase.
Errors

Bit Error
RX: There are logic errors in the bit stream (i.e., zeros that should be
ones and vice versa).

Pattern Error
RX: Indicates a block mismatch. Only available with Seed A or Seed B
pattern.

Mismatch ‘0’
1
RX: There is a bit error on a binary ‘0’ (for example ones that should be
zeros) found in the test pattern only.

Mismatch ‘1’
1
RX: There is a bit error on a binary ‘1’ (for example zeros that should be
ones) found in the test pattern only.
1. Available with EtherBERT.